//https://leetcode.cn/problems/best-time-to-buy-and-sell-stock-with-transaction-fee/
package codeRandomThoughts.Test714买卖股票的最佳时机含手续费;

/**
 * 今天不贪心,复习一次动态规划
 */
public class Solution {
    public int maxProfit(int[] prices, int fee) {
        int len = prices.length;

        //dp[i][0]代表第i天持有股票所剩的最多现金
        //dp[i][1]代表第i天不持有股票所剩的最多现金
        int[][] dp = new int[len][2];

        dp[0][0] = -prices[0];
        //dp[0][1] 没买股票剩的钱就是0

        for (int i = 1; i < len; i++) {
            dp[i][0] = Math.max(dp[i - 1][0], dp[i - 1][1] - prices[i]);
            dp[i][1] = Math.max(dp[i - 1][1], dp[i - 1][0] + prices[i] - fee);
        }

        return Math.max(dp[len - 1][0], dp[len - 1][1]);
    }
}
